Well.. If it's any consolation, your not the first one to make that mistake, get the thread file out and finish with a die if you have one.
I would do that, but 1 side is almost bent a little. I filed the threads and no luck.
http://1.bp.blogspot.com/-u28vczEOUh4/TzPXyfqShuI/AAAAAAAACQM/2PdI0s7zr5A/s1600/IMAG1317.jpg
^ Something like this, but only the threads.